Chemical Engineering - Mass Transfer - Discussion
Discussion Forum : Mass Transfer - Section 3 (Q.No. 32)
32.
Percentage saturation is __________ the relative saturation.
Discussion:
4 comments Page 1 of 1.
KREL said:
11 months ago
Let;
%H = percent saturation.
%RH = relative saturation.
H = humidity.
Hs = saturated humidity.
PA = partial pressure of water at a temperature T.
PA° = vapour pressure of water at a temperature T.
We know that:
%H = H/Hs x 100%.
%RH = PA/PA° x 100% .
Rewriting %H.
= PA/(PT - PA) / PA°/(PT - PA°).
= PA/PA° x (PT - PA°)/(PT - PA).
= %RH x (PT - PA°)/(PT - PA).
Since PA ≤ PA°, the factor (PT - PA°)/(PT - PA) is always between 0 and 1.
Therefore, %H < %RH.
%H = percent saturation.
%RH = relative saturation.
H = humidity.
Hs = saturated humidity.
PA = partial pressure of water at a temperature T.
PA° = vapour pressure of water at a temperature T.
We know that:
%H = H/Hs x 100%.
%RH = PA/PA° x 100% .
Rewriting %H.
= PA/(PT - PA) / PA°/(PT - PA°).
= PA/PA° x (PT - PA°)/(PT - PA).
= %RH x (PT - PA°)/(PT - PA).
Since PA ≤ PA°, the factor (PT - PA°)/(PT - PA) is always between 0 and 1.
Therefore, %H < %RH.
Rosmy Xavier said:
2 years ago
Percent saturation = relative saturation ×[(P-vapour pressure of A)/(P-partial pressure of A)].
[(P-vapour pressure of A)/(P-partial pressure of A)] is always less than unity.
So, percent saturation is always less than relative saturation.
[(P-vapour pressure of A)/(P-partial pressure of A)] is always less than unity.
So, percent saturation is always less than relative saturation.
Kartik said:
5 years ago
Humidification @Kaye Nicolas.
Kaye nicolas said:
1 decade ago
What unit operation this concept is applied?
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